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. 2019 Feb 5;10:66. doi: 10.3389/fneur.2019.00066

Figure 6.

Figure 6

Changes in the autonomic parameters during sleep. (A) Changes in the natural-log transformed high frequency (HF) (Ln HF). (B) Changes in the natural-log transformed low frequency (LF)/HF (Ln LF/HF). (C) Changes in the natural-log transformed LF (Ln LF). (D) Changes in the natural-log transformed very low frequency (VLF) (Ln VLF). The inset indicates the comparison of the mean Ln VLF from 30 to 65 min (red-colored shaded area) after sleep onset (Ln VLF_30–65 min) between the low fatigue group (LFG) and the high fatigue group (HFG). (E) Changes in the natural-log transformed total power (Ln TP). The inset indicates the comparison of the mean Ln TP from 0 to 30 min (red-colored shaded area) after sleep onset (Ln TP_0–30 min) between the HFG and the LFG. (F) Changes in the difference distal-proximal gradient (dDPG). The inset indicates the comparison of the mean dDPG from 30 to 250 min (red-colored shaded area) after sleep onset (dDPG_30–250 min) between the HFG and LFG. *p < 0.05, ****P < 0.0001, respectively.